Posted by **Anonymous** on Wednesday, February 11, 2009 at 9:15pm.

Find the derivative of this function:

y=sin(cosx)

Any help would be appreciated.

- Calculus A -
**bobpursley**, Wednesday, February 11, 2009 at 9:19pm
y=sinu where u is cosx

dy/dx=cosu du/dx= cosu * -sinx

= -cos(cosx)*sinx

- Calculus A -
**Anonymous**, Wednesday, February 11, 2009 at 9:36pm
Oh, thanks. That makes it much easier. Didn't actually notice the cos(x) as being u.

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